CVE-2021-21339

Cleartext storage of session identifier

Description

TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 6.2.57, 7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1 user session identifiers were stored in cleartext - without processing of additional cryptographic hashing algorithms. This vulnerability cannot be exploited directly and occurs in combination with a chained attack - like for instance SQL injection in any other component of the system. This is fixed in versions 6.2.57, 7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1.

Category

5.9
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.13%
Vendor Advisory typo3.org
Affected: TYPO3 TYPO3.CMS
Published at:
Updated at:

References

Link Tags
https://packagist.org/packages/typo3/cms-core third party advisory release notes
https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-qx3w-4864-94ch third party advisory
https://typo3.org/security/advisory/typo3-core-sa-2021-006 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-21339?
CVE-2021-21339 has been scored as a medium severity vulnerability.
How to fix CVE-2021-21339?
To fix CVE-2021-21339, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-21339 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-21339 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-21339?
CVE-2021-21339 affects TYPO3 TYPO3.CMS.
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